/*
 * Copyright (C) 2010 Google Inc. All rights reserved.
 * Copyright (C) 2012 Research In Motion Limited. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following disclaimer
 * in the documentation and/or other materials provided with the
 * distribution.
 *     * Neither the name of Google Inc. nor the names of its
 * contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef SuggestionBoxHandler_h
#define SuggestionBoxHandler_h

#include <wtf/Noncopyable.h>
#include <wtf/RefPtr.h>
#include <wtf/text/WTFString.h>

namespace WebCore {

class HTMLInputElement;
class HTMLElement;

class SuggestionBoxHandler {
    WTF_MAKE_NONCOPYABLE(SuggestionBoxHandler);
public:
    static PassOwnPtr<SuggestionBoxHandler> create(HTMLInputElement*);
    ~SuggestionBoxHandler();
    void setInputElementAndUpdateDisplay(HTMLInputElement*, bool allowEmptyPrefix = false);
    void changeInputElementInnerTextValue(String& text);
    void showDropdownBox(bool);
    void hideDropdownBox();
    HTMLInputElement* focusedElement() const { return m_inputElement.get(); }

private:
    SuggestionBoxHandler(HTMLInputElement*);
    void insertSuggestionsToDropdownBox();
    void buildDropdownBoxTree();
    void parseSuggestions(bool);

    RefPtr<HTMLInputElement> m_inputElement;
    RefPtr<HTMLElement> m_dropdownBox;
    Vector<String> m_suggestions;
};

} // namespace WebCore

#endif // SuggestionBoxHandler_h
